or if you don't have a microSD, flash it using a PC (need adb, drivers, etc.). Rename the ZIP first to PL99IMG.zip

Quote:

4.4.2 With a PC, via fastboot USB

You will need sdk & and drivers, please take a look here. If you already have it, continue.

Reboot to bootloader by Holding Vol down + Power button
Connect your phone to the PC while in the bootloader. The phone should say fastboot USB, if not, select fastboot on the phone & check if it says fastboot USB, if not, change the USB port you are using.
Navigate to the platform tools folder located inside android-sdk folder
Copy the PL99IMG.zip file from step 4.1 to this folder
Hold down shift and right-click anywhere in the empty space inside the window.
Enter the following command
Code:

fastboot erase cache

You may not see any output, then enter the command
Code:

fastboot oem rebootRUU

You phone will now go into the RUU mode.
Wait for around 30 seconds, then enter the command
Code:

fastboot flash zip PL99IMG.zip

The installation will begin and you will be able to see the progress at every step.
Once done, enter the command
Code:

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